[Scott Johnston]

JDT:  Great question. Sorry to be slow responding. It has been a very busy month at Evoke.

A couple of things:  Treadmill speeds are notoriously off unless they are lab quality like a Woodway.  My Nordic Track incline trainer is off by over 10% at all inclines. The last time I checked it when it read 10 min/mile, it was actually 8:45/mile.    YOu may have been running faster than you thought.

Secondly, the 3.5% incline could have made a difference, although I normally only see big differences in the drift tests when the incline is steep.  Steep is relative for each individual.  You will have to determine that for yourself.

I hope that helps.

Scott